NBC of Canada 1995
RAM Frame has an option for generating wind loads based on National Building Code of Canada 1995 (NRC-CNRC-95).
Note: The special provision for low-rise buildings are not implemented. For such low-rise buildings, users may enter the wind loads as nodal loads or diaphragm loads or as a combination of both.
The design wind pressure is calculated from the formula:
| p = qCeCgCp - qCeCgCpi |
| = | ||
| = | ||
| = | ||
| = | ||
| = | ||
| = | ||
| = |
For Cg, the simple procedure is explained on p.13 of the Commentary of NBCC 95 (Cg= 2.0 for structural systems). The detailed procedure is also given on p.13 of Commentary.
RAM Frame generates the code-specified wind load cases in the following directions and magnitude:
- Full wind load acting along each of the 2 principal horizontal axes considered separately. This expands to two load cases: Wind__NBCC95_1_X and Wind__NBCC95_1_Y.
- Wind loads as described in (a) but with 25% of load removed from any portion of the area. This expands to four load cases: Wind__NBCC95_2_X+E, Wind__NBCC95_2_X-E, Wind__NBCC95_2_Y+E, and Wind__NBCC95_2_Y-E.
@ ±0.035714 × BldgDim from COE
- Wind loads as described in (a) but considered simultaneously at 75% of their full value. This expands to two load cases: Wind__NBCC95_3_X+Y and Wind__NBCC95_3_X-Y.
- Wind loads as described in (c) but with 25% of these loads removed from any portion of the area. This expands to two load cases: Wind__NBCC95_4_CW and Wind__NBCC95_4_CCW, where CW refers to clock-wise and CCW denotes counter-clock-wise.
@ ±0.035714 × BldgDim from COE
